EN Catalog 2021-22 - Catalog - Page 135
AUTOLIMITER® II
AUTOMATIC OVERFILL
PREVENTION VALVE
The Autolimiter ® overfill prevention valve is a self contained
two-stage positive shut-off valve designed to prevent the
overfill of an underground storage tank (UST) during a gravity
fed product delivery. When the liquid level of the UST reaches about 92% of the tank capacity during a fill, the product in
the tank raises the lower float of the valve. The primary poppet of the valve is then released and reduces flow to about
10% of normal flow. The sudden reduction in flow created
by the closing of the primary poppet provides "line shock"
to the fill hose notifying the transport delivery driver the tank
is nearing 95% capacity. The transport delivery driver can
then stop filling the tank, disconnect and drain the delivery
hose. The upper float will close off the product flow when the
product level reaches 95% of the tank capacity.
SPECIFICATIONS
•
Two-stage, spring-loaded shut-off flapper reduces
line shock.
•
Vertical float design allows for valve to be removed
even when tank is full.
•
•
Inspection test port.
Installation
• The Autolimiter® II is designed solely for use in underground storage tanks. For gravity drops only. No attempt
should be made to utilize this product with aboveground
storage tanks. The valve would not function, creating a very
dangerous condition.
Bottom tube threads on (except for -04 models).
•
•
This product is for use in tight fill applications only.
EVR Phase 1 models require T-6100-FT installation tool.
ORDERING INFORMATION
Model
Description
70849404
Overfill Prevention Valve only 4" without Drop Tube (valve only)
SERVICE STATION
HARDWARE
HIGHLIGHTS
Top of Riser
A
Riser Pipe
Top of Tank
C
95%
16" (406 mm)
B
Bottom of Tank
6" (152 mm) Standard Spacing or Per Local Code
Note: EVR valves require faring tool.
135
